Vertical telescopic hoist



Sept 59 933. E. R. BARRETT l VERTICAL TELESCOPIC HOIST.

Filed July 50, 1932 OWQL Patented Sept. 5, 1933 1,925,296 vrin'ricar.` TELESCOPIC Hols'r Edward R. Barrett, Detroit, Mich., assigner to Wood Hydraulic Hoist & Body lompany, Detroit, Mich.,a corporation of Michigan Application July 30, 1932. Serial No. 626,517

Claims.

This invention relates to a combination dumping wagon and hoist therefor, being particularly concerned with bodies and hoisting mechanism wherein the body is positioned low, the body being 5 mounted on a truck frame andthe frame being close to the ground whereby the emptying of garbage, ashes, and the like into the body is facilitated. Because of the low slung character of the body and the truck chassis frame supporting the same, it is diflicult to mount any under body hoisting apparatus for the same because of lack of space, and at the same time retain the low character of the body whereby emptying of refuse thereinto is easily accomplished.

It is a primary object and purpose of the present invention to provide a particularly practical and serviceable construction and organization whereby all of the characteristics ci low mounting of the body, low chassis frame, a high tilting an- 20 gle to the body for dumping, a utilization of substantially all available space back-of the cab for the mounting of the body, and a concealment of the hoisting apparatus when the body is in its lower positionare attained, together with a very ratus for lifting or tilting the body about a rear horizontal axis to tilt and lift the same to dump the contents of the body when it is desired.

An understanding of thefinvention for an attainment of the ends stated, aswell as many others not at this time specifically enumerated, may be had from the following description, taken in connection with the accompanying drawing, in which,

Fig. 1 is a side elevation with certain parts broken away and shown in section illustrating the combined body and hoisting apparatus with the body in upper tilted position.

Fig. 2 is a fragmentary enlarged verticalsection of the front end of the body and hoist with' the hoist collapsed and the body in lower position, and

Fig. 3 is a iront elevation of the body and hoist With certain parts broken away and shown in section for better disclosure.

Like reference characters refer to like parts in the diierent gures of the drawing.

The motor truck 1, on which the vbody and hoisting apparatus is to be mounted, is of a very low slung type having side chassis frame members 2 located in a plane substantially not higher than the axis about which the wheels of the truck turn. The body 3 is pivotally mounted at its rear end and underside, as at 4, so that it may be tilted upwardly at its front end for a discharge of its practical, serviceable and durable hoisting appa' contents by gravity, the same sliding rearwardly when the body is tilted to upper position.

The body has vertical sides 5 above which are mounted doors 6, somewhat inclined inwardly and usually sldable past each other, and which may be opened when garbage, ashes or other refuse is to be placed within the body. 1t is equipped with a tail-gate 7 pivotally mounted at its upper end which may swing open as the body is elevated, and with a Vertical front 8, except for the recessed portion, hereafter described, in which the hoisting' apparatus is concealed when the body is in lower position. The body has a bottom and a closing top between the upper edges of the doors andthe bottom rests upon and is connected to horizontal channel sills 9 which with suitable cross members and the like form a strong supporting frame for the body and the weight which it has to carry.

In the front end of the body, a recessed portion 10 is made, wider at the bottom than at the top, and deeper at the bottom than at the top, the rear side of which is' provided by an up wardly and forwardly inclined metal plate 11 bent from and forming a continuation ofthe bottom of said body. At the front of the recess is a substantially inverted V-shaped frame mem'- lber having downwardly diverging legs 12, connected at theirupper ends by a short cross member 13; and the lower ends ofthe legs 12 are directly and permanently connected'to the sill members 9. l

The' hoisting apparatus is preferably of a telescoping nature and of hydraulic type wherein oil is pumped into the bottom cylinder of the hoisting apparatus to extend and lift other cylinders and the piston rod which normally are tele- `scoped and received within the lower and larger cylinder of the hoist. This hoisting apparatus is mounted at its lower end on and carried by a rocking cradle comprised of spaced angle bars 14 which are located between bearing blocks 15 carried at the inner sides of the truck chassis frame members 2, the angles being connected by cross members 16 from which pivot studs extend into the bearing blocks 15. This permits the hoist to tilt about a horizontal axis in a forward or rearward direction.

The hoist has a lower cylinder 17 which at its lower end is pivotally connected by pivots 18 on and between the angle bars 14, previously described. In the hoist shown two telescoping sections 19 of progressively smallerdiameter are utilized with the large outer lower cylinder 17 .Y and a piston rod 20 telescopes into the upper end 110 www.. an

of the upper cylinder 19. The details of construction of the hoist form no part of the present invention, such being fully shown and de scribed in a prior pending application filed by me, Serial No. 367,188, filed 'May 31, 1929. Ihe upper end of the piston rod 20 is connected by meansfof a universal joint 21 with the upper cross member 13 of the inverted V-shaped frame heretofore described.

With a construction as described, when the body is in its lower position the hoist is located between the sides 12 of the frame described and is substantially concealed from View, the body extending forward beyond each side of the recess 10 in which the hoist is received. On extending the hoist by pumping oil or equivalent liquid into the same, the body is lifted, as shown in Fig. 1, about its rear axis 4, and by reason of the greater depth of the recess 10 at its lower end and the inclined rear side 11 thereof, ample space is provided to permit the hoist to enter said space and be carried tothe rear portion thereof without interference by the lower part of the body engaging against the hoist members. This is fully shown in Fig. 1.

t will also be apparent that .the strains caused by tilting the body upwardly are directly transmitted to the lower frame and particularly to the sill members 9 thereof through the direct connection of the upper end of the hoist to the inverted V-shaped channel frame to the upper end of which the piston rod is connected.

The universal mounting of the hoist at both its upper and lower ends relieves the hoist of lateral strains which are taken by the pivots 4 and which may be made amply strong to withstand the same.

With this construction a very low mounting of the body may be had and the depositing of refuse in the same is readily accomplished from the ground, without the necessity of climbingv up on the truck. All available space back of the cab is utilized the only loss of space being what is taken by providing the recess 10 for the hoisting mechanism. The construction is exceptionally practical and efficient and has so proved in practice.

'Ihe invention is defined in the appended claims and is to 'be considered comprehensive of Vall forms of structure coming within their scope.

I claim:

1. In combination, a truck chassis frame, a body mounted thereon for tilting movement about its rear end, said body being recessed-vertically at its front end, the recess being of greater depth at its lower end than at its upper end, an inverted substantially V-shaped frame around the front portions of said recess, frame members for carrying the body to which the lower end of the sides of said inverted V-shaped frame are secured, and an extensible hoisting apparatus mounted at its lower end on the truck` frame and connected at its upper end to the upper end portion of said inserted V-frame.

2. In a construction of the class described, a truck having a low slung chassis frame, a body tiltably mounted thereon for upward tilting movement about an axis at the rear end of the frame, spaced apart horizontal body frame members underneath and supporting the body, said body at its front end having a Vertical recess, the rear side of which is inclined downwardly and rear- War-diy, an inverted V-shaped frame located at the front portion of the recess in the body and having its lower ends of its sides connected to the front ends of the body supporting frame members, and an extensible hoisting apparatus pivotally mounted on the truck frame at its lower end and pivotally connected at its upper end to the upper end of said inverted V-frame.

3. In combination, a motor truck having a low slung chassis frame, a body tiltably mounted thereon for upward tilting movement at its front end, said body being recessed at its front end, the recess being wider and deeper at its lower end than at its upper end, spaced apart horizontal body supporting frame members under said body, an inverted V-shaped frame having its sides connected at their lower ends with the front ends of the body supporting frame members andy located within sai-d recess, a supporting cradle mounted to turn about a horizontal axis andl pivotally carried at its ends by the truck frame, an extensible hoist pivotally mounted on said cradle to turn about a horizontal axis at right angles to the' axis of the cradle, and a universal joint connection between the upper end of the extensible hoist and the upper end of said inverted V-shaped frame.

4. In combination, a truck chassis frame, a body mounted thereon for tilting movement about its rear end, said body being recessed vertically at its front end, an inverted substantially V- shaped frame around the front portions of said recess, frame members for carrying the body to Vwhich the lower end of the sides of said inverted V-shaped frame are secured, and an extensible hoisting apparatus mounted at its lower end on the truck frame and connected at its upper end to the upper end portion of said inserted V-frame. `5.1151 combination, a truck chassis frame, a body mounted thereon for tilting movement about its rear end, said body being recessed vertically at its front end; an inverted substantially V- shaped frame fastened at the front end of said body,` frame members vfor carrying the bodyto which the lower end of the `sides of said inverted V-shaped frame are secured, and an extensible hoisting apparatus mounted at its lower end on thetruck frame and connected at its upper end to the upper end portion of said inserted V-frame. EDWARD R. BARRETT.

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